Mert Köseoğlu
Software Engineering, LLMs, Agents, Generative AI
MKAbout
My name is Mert Köseoğlu, I am a Software Engineer with over 10 years of experience in development and technical leadership within fully remote, global teams. Adept at architecting scalable solutions, building and mentoring engineering teams, and delivering high-impact software products. Expertise in test-driven development (TDD), TypeScript, Node.js, Bun, React, and React Native, AI, LLMs, Agents
Skills
Software Engineering
Engineering Management
Technical Leadership
Founding Engineer
Work Experience
Mert Koseoglu, Software ForgeTRRemote
2024 - Present
Senior Software Engineering Consultant
Software consultancy providing strategic guidance and engineering solutions. Key projects: Doğuş Technology - VDF Web, D-Charge.
PlanhatStockholm County, SwedenRemote
2023 - 2024
Senior Software Engineer
Planhat is a customer platform that provides insights, manages workflows, and enhances customer experience for modern technology companies worldwide. As a Senior Software Engineer (Full-stack), I contributed to feature development and maintenance, working primarily with Vue and Node.js.
QooperChicago, Illinois, United StatesRemote
2021 - 2023
Technical Lead
As a Technical Lead at Qooper, I: Guided high-level architectural discussions and proactively removed blockers to maintain consistent development progress. Collaborated with the CTO to refine the recruitment process, aligning hiring practices with evolving product requirements. Interviewed and hired engineers across mobile, web, and backend roles, growing the team from 1 to 6 members. Provided career guidance, conducted regular 1:1 sessions, and performed code reviews to reduce technical debt and enhance the overall developer experience. Consistently sought out new best practices and emerging technologies to elevate team performance and technical standards.
QooperChicago, Illinois, United StatesRemote
2021 - 2021
Senior Software Engineer
Qooper is a comprehensive people development platform that offers mentorship, coaching, learning, group, and opportunity solutions. As a Senior Software Engineer (Full-stack), I: Contributed to migrating backend services from Ruby to Node.js, adopting modular architecture patterns. Partnered with product and design teams during a major UI revamp, restructuring front-end codebases. Transitioned separate native iOS/Android codebases into a unified React Native application. Conducted technical debt audit and formulated remediation roadmap.
CountlyLondon, England, United KingdomRemote
2019 - 2021
Software Engineer
Countly is a product analytics solution that processes billions of data-points daily. As a Software Engineer, I: Utilized Node.js, MongoDB, Backbone.js, jQuery, TDD, and Vue.js to build scalable solutions. Developed plugins, integrated React Native SDK, and optimized components. Implemented key analytics features—Top Events, Event Groups, Data Points, and Filtering Rules CLI. Improved the Drill Plugin and refined Dashboard UX.
TDSmakerIstanbul, TurkeyRemote
2018 - 2019
Software Engineer
TDSmaker is a web-based solution for managing technical datasheets. As a Software Engineer, I: Leveraged React, Redux, TypeScript, Node.js, MongoDB, AWS, Jenkins, and TDD to build core functionalities. Contributed to platform capabilities, enhanced usability, and improved performance. Integrated AWS services and optimized CI workflows. Adhered to TDD principles, delivering robust, maintainable code.
JotformAnkara, TurkeyOn-site
2018 - 2018
Software Engineer
Contributed to Jotform's form builder platform development.
Mert Koseoglu, Software ForgeTRDENLRemote
2013 - 2018
Software Engineering Consultant
Software consultancy providing strategic guidance and engineering solutions.
Recommendations
“I highly recommend Mert as a skilled and dedicated professional. He consistently delivered high-quality code and played a key role in enhancing our products' user experience. Rapidly advancing to the position of Technical Lead, he demonstrated not only technical excellence but also strong leadership and mentoring capabilities. Adaptable and forward-thinking, he embraces challenges and excels in learning new technologies. He effectively communicates with cross-functional teams and stakeholders, contributing to a positive work environment. I am confident that Mert will continue to excel and be a valuable asset to any organization.”
“We met with Mert at Qooper and he was the team leader. I saw how he takes seriously his work, follows up his work very well, pays great attendance to code reviews, and combines his technical knowledge with leadership skills very well. On code reviews and when we take technical discussions, I've learned great approaches from him. I would definitely like to work with people like Mert in the companies I work for. Thank you, Mert!”
Emre Deger
Lead Backend Engineer at Qooper Analytics
reported directly to Mert Köseoğlu • June 28, 2022
“The sides that make Mert the most valuable; always open to new ideas, not afraid to learn and share information, and have a great business ethic. His strong communication skills make him an indispensable and very good manager. He always supported the teams both technically and mentally. A manager you will always enjoy working with. It was a big pleasure working with Mert.”
“Mert was a great professional to work with. We worked together at Qooper and he helped me a lot to get started and also to understand internal processes. His work ethic is immaculate and so easy to work together with. He always kept the team motivated and shared knowledge. I believe he is one of the best managers I ever had, as his people skills are highly developed. I'd definitely work with him again.”
Furkan Başaran
Lead Software Engineer at Countly Analytics
worked with Mert Köseoğlu but on different teams • May 17, 2020
“Mert has a deep passion and energy for learn new things. I think this passion will keep him as valuable person/employee/teammate at his whole career.”
“Mert is one of the most talented developers that I ever worked with. He is ambitious, eager to learn, and productive. He worked with me as a full stack developer at TDS maker. Since the position is remote, I had doubts about working with such a young developer. But I had never had an issue with him. He knows his responsibilities, and he tries his best to finish the tasks. I definitely recommend him to the employers who want to work with.”
Projects
LLMs
Agents
Generative AI
Prompt Engineering
Langchain
RAG
Vector Databases
OXVO
github.comoxvo
Easy appointment management platform for businesses. Update your business information, manage your services, keep track of your employees, and monitor your customers. See statistics, and communicate with them.
CTO
TypeScript
React
Node.js
GraphQL
Next.js
tRPC
React Native
VDF Web
linkedin.comcompany/vdf
Built and led an eight-person engineering team to deliver a large-scale web application leveraging Next.js (SSR/SSG), a custom design system, and a modern stack. Combined strategic guidance with hands-on coding, ensuring a seamless journey from architecture to deployment.
TypeScript
Zod
TanStack
Zustand
Next.js
Tailwind
Storybook
E2E Testing
.NET 8
Strapi CMS
Docker
Kubernetes
Nginx
D-Charge Admin Panel
linkedin.comcompany/d-charge
Leading the front-end and BFF REST API development of an admin panel—utilized by distributors, administrators, and various stakeholders—while overseeing two interns.
TypeScript/Zod
Shadcn UI
TanStack
Zustand
React.js
Tailwind
Node.js
Docker
Kubernetes
Nginx